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Adding CO2 to AIR-1

You'll open the case, attach the SCD40 sensor to the mezzanine connector on the back of the board, and close the case again.

1. Unplug your AIR-1 from power and lift the top of the case or "lid".

AIR-1 in its white case with the lid on and the USB-C port facing forwardFingers lifting one side of the AIR-1 lidAIR-1 lid lifted, showing the circuit board inside the case

2. Remove the lid completely by grabbing the lid from the other side and gently lifting upwards.

Lifting the AIR-1 lid completely off from the other side

3. Hold the PCB and orient it correctly where Apollo (the dog) is facing you in.

AIR-1 circuit board held with the Apollo dog graphic facing you, sensor below

4. Gently slide the pcb out by sliding it to the left as shown in the images below.

AIR-1 circuit board being slid to the left out of the lidAIR-1 circuit board slid further left, almost free of the lid

5. Flip the PCB over and identify the bottom right corner where the small black mezzanine connector lives. You will see an "X" indicating which corner needs to be lined up with the SCD40 CO2 sensor. There is an X on the SCD40 sensor's PCB as well, you can see it in the image below but it is slightly cut off on the PCB itself. There is also a "gold dot" in the top left of the SCD40 when oriented properly.

Back of the AIR-1 circuit board with an X marking the bottom right mezzanine connector

6. Gently push the SCD40 CO2 module onto the black mezzanine connector.

SCD40 CO2 sensor pressed onto the mezzanine connector on the AIR-1 board

7. Gently slide the PCB back into the 3d printed case as shown below.

AIR-1 circuit board being slid back into the lid's printed channelsAIR-1 circuit board fully seated in the lid with the Apollo dog graphic facing out

8. Gently push the case back together as shown below.

AIR-1 lid being lowered back onto the caseAIR-1 lid nearly closed with the USB-C port lined up with its openingAIR-1 case fully closed with the lid back in place

9. Please refer to our CO2 calibration guide to calibrate the CO2 module after installation. This is required for all CO2 addons purchased from us separately from a product (such as buying it to addon to an existing Apollo device).